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प्रश्न
Name the scientists who discovered the following:
Safety lamp
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उत्तर
A scientist who discovered Safety lamp: : Sir Humphry Davy
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संबंधित प्रश्न
What is the contribution of chemistry in following field?
Industry
What is the contribution of chemistry in following field?
Cosmetics
What is the contribution of chemistry in following field?
Medicines
Write True or False against the following statement.
Antibiotics are used as preservatives:
Explain in brief the importance of Chemistry in the production of various products.
Differentiate between the terms food preservatives and food processing with appropriate examples.
Explain how medicines are a boon to mankind. State the positive & negative effects of medicines like aspirin and paracetamol.
Give reasons for the following
Cosmetics may contain preservatives, as one of their ingredients.
Give reasons for the following
Polyester is added to natural fiber cotton, to give terylene.
Give reasons for the following
All medicines must be taken under proper doctors' supervision and in the correct dose.
